fix: Weaviate - fix connection issues with some WCS URLs (#1058)

* try fix

* small fix in docstring

* simplify condition

* better condition and comments

* only lint on 3.9 like other integrations

.github/workflows/weaviate.yml

@@ -44,6 +44,7 @@ jobs:
         run: pip install --upgrade hatch
 
       - name: Lint
+        if: matrix.python-version == '3.9' && runner.os == 'Linux'
         run: hatch run lint:all
 
       - name: Run Weaviate container

integrations/weaviate/src/haystack_integrations/document_stores/weaviate/document_store.py

@@ -68,7 +68,7 @@ class WeaviateDocumentStore:
     from haystack_integrations.document_stores.weaviate.auth import AuthApiKey
     from haystack_integrations.document_stores.weaviate.document_store import WeaviateDocumentStore
 
-    os.environ["WEAVIATE_API_KEY"] = "MY_API_KEY
+    os.environ["WEAVIATE_API_KEY"] = "MY_API_KEY"
 
     document_store = WeaviateDocumentStore(
         url="rAnD0mD1g1t5.something.weaviate.cloud",
@@ -172,17 +172,18 @@ def client(self):
         if self._client:
             return self._client
 
-        if self._url and self._url.startswith("http") and self._url.endswith(".weaviate.network"):
-            # We use this utility function instead of using WeaviateClient directly like in other cases
-            # otherwise we'd have to parse the URL to get some information about the connection.
-            # This utility function does all that for us.
-            self._client = weaviate.connect_to_wcs(
+        if self._url and self._url.endswith((".weaviate.network", ".weaviate.cloud")):
+            # If we detect that the URL is a Weaviate Cloud URL, we use the utility function to connect
+            # instead of using WeaviateClient directly like in other cases.
+            # Among other things, the utility function takes care of parsing the URL.
+            self._client = weaviate.connect_to_weaviate_cloud(
                 self._url,
                 auth_credentials=self._auth_client_secret.resolve_value() if self._auth_client_secret else None,
                 headers=self._additional_headers,
                 additional_config=self._additional_config,
             )
         else:
+            # Embedded, local Docker deployment or custom connection.
             # proxies, timeout_config, trust_env are part of additional_config now
             # startup_period has been removed
             self._client = weaviate.WeaviateClient(